Automatic constant pressure type clamp ring of magnetostrictive guided wave detector

Abstract

The invention relates to an automatic constant pressure type clamp ring of a magnetostrictive guided wave detector, which is structurally and mainly includes a stainless steel thin band, a stay cord and gravity blocks, wherein at least two separated narrow steel bars are arranged at both ends of the stainless steel band respectively; and the end parts of the narrow steel bars are connected with the gravity blocks through the stay cord. During the use, a plurality of narrow steel bars are intersected at and pass through the cohesion part of a winding pipeline, and the narrow steel bars is as wide as the steel band, so that the sensor of the magnetostrictive guided wave detector can be cohered fully without non-fitted area; the strength of the cohesion force completely depends on the gravity blocks, and has no bearing on the working temperature of the pipeline. The automatic constant pressure type clamp ring has the advantages of capabilities of automatically adjusting the tightness as per the temperature and keeping the press force unchanged, is most suitable for magnetostrictive guided wave detection of a high temperature pipeline, and is suitable for magnetostrictive guided wave detection of a normal temperature pipeline.

Description

technical field [0001] The invention relates to a snap ring, in particular to a snap ring which can automatically maintain a constant pressing force and is especially suitable for fastening a high-temperature pipeline using a guided wave detection sensor, which belongs to a guided wave detection accessory or a tightening ring with a constant pressing force. firmware. Background technique [0002] The magnetostrictive guided wave (MsS) is generated by the surrounding coil and the iron-cobalt alloy belt sensor placed on the pipeline. The coil provides a current pulse through the iron-cobalt alloy belt to generate ultrasonic waves that are transmitted into the pipe wall and propagate in the pipe wall, and then By receiving the reflected signal, the corrosion status of the pipeline can be judged. [0003] The whole set of guided wave detection device is composed of signal transmitting and receiving sensors, probe snap ring and host. Among them, the sensor is composed of a surr...

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Problems solved by technology

[0004] The object of the present invention is to overcome the shortcomings of the above-mentioned existing bolt-fastened snap rings that are not tightly pressed "non-fitting areas" and that the sensor pressing force of the magnetostrictive guided wave detector is more uneven under high temperature conditions. In order to improve the accuracy of measuring the corrosion status of pipelines in high-temperature working conditions, design a structure with reasonable structure, uniform pressing force and no non-fitting area, and can automatically adjust the tightness according to the temperature to keep the pressing force constant. Automatic constant pressure magnetostrictive guided wave detector snap ring

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